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AMT’s 1/25 scale International Payhauler 350 Construction Truck makes for a challenging project, and with a 24-page assembly booklet, it’s everything big rig builders have come to expect in modeling. Rise to the challenge and order yours today!
Features
Massive Goodyear tires
Steerable front end
Hinged cab door
Functional dump body
V-16 engine
Massive rear suspension
428 Parts
14.5 Inches long once assembled
Parts molded in yellow, white, black and clear, with black vinyl tires
The Payhauler is a series of dump trucks that were produced from 1956 to 2003. Initially produced by International Harvester as the International Harvester Payhauler, the line was spun off in 1982 into a separate company, the Payhauler Corporation.
History
In 1956, the International Harvester company introduced the Payhauler line of heavy duty off-highway rear-dump trucks, initially available as a 25-ton (23t) capacity rear-wheel-drive model. Unlike other haul trucks it had dual tires on the front (steering) axle and carried the load with the same weight on both axles. Early models had a Detroit Diesel 16V71 engine, later Cummins engines were used.
In 1964, the Payhauler 180 entered service. The 45-ton (43t) truck became the first large, all-wheel-drive end-dump truck in the market.
In 1973, the original rear-drive model trucks were discontinued, and the all-wheel-drive truck models were designated the Payhauler 330 and 350 for their 45-ton (43t) and 50-ton (45t) trucks respectively.[1][2]
Ownership changes
In 1982, International Harvester sold the Payhauler line to employees who formed the Payhauler Corporation to continue manufacture of the Payhauler 350. Payhauler would later be acquired by Terex in 1998.
During both ownership changes, the Payhauler 350 continued to be produced with the paint scheme being the only apparently change made to the truck up until the line was discontinued in 2003.
Developed from the ground-breaking International PH180, the first successful four wheel drive off-highway dumptruck offered by any manufacturer, the PayHauler 350 was also 4-wheel drive and carried a payload of 50 tons.
International Harvester (IH) engineers had considerably refined the PH180 design incorporating quite a few changes along the way, and the end product was styled to match other machines in International’s ‘Pay’ line of earthmoving equipment.
Powered by a Detroit Diesel 16V-71N engine the hauler looked very impressive.
The concept of the machine was that it carried 50 percent of the load on each axle, which made for a very well balanced and stable haul platform.
Four wheel drive allowed for good gradeability, especially as the vehicle had an evenly proportioned load with the added benefit of being able to negotiate soft underfoot conditions without getting stuck.
It could also work in conditions that would shut other jobs down.
IH had quite a niche market for these off highway haulers as no competition existed, and arguably still don’t unless you include ADTs in the equation.
But there aren’t too many 50 ton capacity ADTs on the market designed to carry blasted rock on a daily basis.
IH expanded the range by adding the smaller 35 ton model 330 PayHauler and the 40 ton capacity model 340 to the line as well.
A PayHauler 350B model was introduced in 1978 with the most notable change being in the design and construction of the dump body which had a reduced number of side stiffening members and changes to the air induction system.
By this stage the Cummins VT1710C engine had supplanted the Detroit Diesel 16V-71 as standard power.
When International Harvester imploded in 1982, a separate company was set up by ex-employees called the Payhauler Corporation.
Production was shifted to Batavia, Illinois, where it continued to manufacture and sell the PayHauler 350B and in 1986 introduced a further upgrade to the design, being the PayHauler 350C.
Payhauler Corp offered Detroit Diesel, Caterpillar or Cummins engines as the prime powerplant.
Payhauler Corp was bought by Terex in 1998 and by 2003 Caterpillar had acquired the company.
Since then no new machines have been produced. Caterpillar has elected – so far – not to proceed with any production or further development of the design.
Three optional bodies were offered for the 350C – heavy duty rock, earth and coal. These could all be exhaust heated if necessary to prevent the load from sticking to the dump bed in cold climates. There was also a wide range of tyres to suit all manner of operating conditions.
